<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <title>Resize a Marker</title>
    <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
    <link rel="stylesheet" href="style.css" type="text/css">
    <script src="../lib/OpenLayers.js"></script>
    <script type="text/javascript">
        var map, layer;
        var size, icon;
        
        function init(){
            map = new OpenLayers.Map('map');
            layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
                
            map.addLayer(layer);
            var markers = new OpenLayers.Layer.Markers( "Markers" );
            map.addLayer(markers);

            size = new OpenLayers.Size(21, 25);
            calculateOffset = function(size) {
                        return new OpenLayers.Pixel(-(size.w/2), -size.h); };
            icon = new OpenLayers.Icon(
                'http://www.openlayers.org/dev/img/marker.png',
                size, null, calculateOffset);
            markers.addMarker(
                new OpenLayers.Marker(new OpenLayers.LonLat(-71,40), icon));

            map.addControl(new OpenLayers.Control.LayerSwitcher());
            map.zoomToMaxExtent();
        }

        function resize() {
         
            size = new OpenLayers.Size(size.w + 10, size.h + 10);
            icon.setSize(size);   
            
        }
    </script>
  </head>
  <body onload="init()">
    <h1 id="title">Resize a Marker</h1>
    <div id="tags">
        animation, resizing, style, size
    </div>
    <div id="shortdesc">Dynamically resize a marker</div>
    <div id="map" class="smallmap"></div>
    <div id="docs">
        <p>This example shows how to create a OpenLayers.Layer.Markers layer,
        add an icon, put it into a marker, and add the marker to the layer.
        Once the marker has been added it is possible to use setSize() on the
        icon in order to resize the marker.</p>
    </div>
    <div style="background-color:purple" onclick="resize()"> click to resize marker</div>
  </body>
</html>
